Delhi Metro Yellow, Red, and Blue lines are the three major corridors of the metro networkIn order to avoid overcrowding amid the ongoing COVID-19 crisis within metro coaches, the Delhi Metro authorities will add 120 more metro train coaches on three of its corridors. According to a statement shared by the Delhi Metro Rail Corporation (DMRC), all fleet of six-coach metro trains will be converted to eight-coach trains on the Delhi Metro Red, Blue, and Yellow Lines. This means that 120 additional coaches will be added on Delhi Metro Red Line Rithala-Shaheed Sthal New Bus Adda, Delhi Metro Yellow Line HUDA City Centre-Samaypur Badli, and Delhi Metro Blue Line Dwarka Sector-21 – Noida Electronic City/Vaisali. (Also Read: Here’s How You Can Recharge Your Delhi Metro Smart With Amazon Pay )According to the DMRC, the addition of coaches and conversion is expected to be completed by the end of this year after which all metro trains operating on these lines will have eight coaches. The conversion of six-coach to eight-coach metro trains is being done to increase the carrying capacity on these major routes on the network. Also, on the Delhi Metro Yellow Line, the process of converting all 12 six-coach metro trains into eight-coach trains will be completed, taking the total number of eight-coach trains on Delhi Metro Yellow Line to 64.Additionally, the remaining nine metro trains having six coaches on Delhi Metro Blue Line and 39 six-coach metro trains on Delhi Metro Red Line will be converted into eight-coach trains by the end of this year. This conversion will then take the total number of eight-coach metro trains on Delhi Metro Blue and Red Lines to 74 and 39, respectively. (Also Read: Delhi Metro Red Line Stations Redeveloped: All You Need To Know )The Delhi Metro Blue, Yellow, and Red Lines are the three main corridors of the Delhi Metro network, that together contribute to almost 40 per cent – 50 per cent passenger utilisation every day. Delhi Metro authorities said that out of the 120 additional metro coaches, 40 coaches are procured from M/s Bombardier and 80 coaches from Bharat Earth Movers Limited (BEML).